<template>
  <el-menu
    default-active="2"
    class="el-menu-vertical-demo"
    background-color="#606266"
    text-color="#fff"
    active-text-color="#ffd04b"
    :collapse=" isCollapse"
  >
    <h3 v-show="!isCollapse">Manba后台管理系统</h3>
    <h3 v-show="isCollapse">Manba</h3>
    <el-menu-item
      :index="item.path"
      v-for="item in noChildren"
      :key="item.path"
      @click="clickMenu(item)"
    >
      <i :class="`el-icon-`+ item.icon"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>
    <el-submenu index="index" v-for="(item,index) in hasChildren" :key="index">
      <template slot="title">
        <i :class="`el-icon-`+ item.icon"></i>
        <span slot="title">{{item.label}}</span>
      </template>
      <el-menu-item-group>
        <el-menu-item
          :index="subItem.path"
          v-for="(subItem,sunIndex) in item.children"
          :key="sunIndex"
          @click="clickMenu(subItem)"
        >
          <i :class="`el-icon-`+ subItem.icon"></i>
          <span slot="title">{{subItem.label}}</span>
        </el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<script>
export default {
  computed: {
    noChildren() {
      return this.menu.filter(item => !item.children);
    },
    hasChildren() {
      return this.menu.filter(item => item.children);
    },
    isCollapse() {
      return this.$store.state.tab.isCollapse;
    },
    menu() {
      return this.$store.state.tab.menu;
    }
  },
  data() {
    return {
      asideMuen: [
        {
          path: "/",
          name: "home",
          lable: "首页",
          icon: "s-home"
        },
        {
          path: "/video",
          name: "video",
          lable: "视频管理",
          icon: "video-play"
        },
        {
          path: "/user",
          name: "user",
          lable: "用户管理",
          icon: "user"
        },
        {
          lable: "其他",
          icon: "user",
          children: [
            {
              path: "/page1",
              name: "page1",
              lable: "页面1",
              icon: "setting"
            },
            {
              path: "/page2",
              name: "page2",
              lable: "页面13",
              icon: "setting"
            }
          ]
        }
      ]
    };
  },
  methods: {
    clickMenu(item) {
      this.$router.push({ name: item.name });
      this.$store.commit("seletMeun", item);
    }
  }
};
</script>

<style lang="scss" scoped>
.el-menu {
  height: 100%;
  border: none;
  h3 {
    color: #fff;
    text-align: center;
    line-height: 48px;
  }
}
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
</style>